/dts-v1/; /plugin/; / { compatible = "brcm,bcm2708"; fragment@0 { target = <&leds>; __overlay__ { /* * External LED to show CPU activity. * Active-high, GPIO 27 */ ext_act_led: act { label = "ext_act"; linux,default-trigger = "cpu0"; gpios = <&gpio 27 0>; }; }; }; };